This is a permission issue.
Please provide read and write permissions to the folder.
For Particular Folder
Locate that folder
right click on that (CTRL + Click) and then click on Get Info.
At the bottom you will find sharing and permissions - Click on that
You will find a Lock icon at the bottom right , please click on that lock icon and then it might ask you for your mac password, please put in that.
Now click on the small plus(+) icon and then add the users that you want , Please make sure that you are adding the admin account as well.
Provide read and write permissions to all.
Click on the gear icon at the bottom of the get info window and then choose "Apply to enclosed items " This will pop a message that changes cannot be undone- click OK to that.
This will apply privileges and that might take a bit time depending upon the size of folder.
once done , Click on lock icon and then close the get info window.
Thanks, The machine is still at the apple service center. I'll go there again tomorrow and follow these instructions and let you know how it turns out.
To restore a Time Machine backup you don't use the OS X Time Machine App. You boot the system from the Built In Recovery partition, hold down Command + r keys at startup (Power Up), and from there you can use the Restore from Time Machine backup system.
Note your New Mac is probably running El Capitan so your old mac and the Time Machine backup would also need to include the El Capitan OS X version.
I had done this (Command-R) as well but I could not find a way to bring over the data only. I remember ending up in Migration Assistant to recover my entire old system over from Time Machine which didnt bring the images over and left icons with question marks on the icon dock. So I ended up doing a factory reset to get things back to where I started.
When i click on the plus sign i am already there as a read/write user as is admin. Both my name and admin are greyed out and uneditable
Update: i went through your process and re-selected read/write option for greyed-out users "recorded the enclosed changes". Problem has been solved. Thanks!